I'm sorry for your loss, but it's a clear indication that your Private wallet information has been compromised, which gives the hacker an access to your ethereum and other tokens in the wallet, it could also be from your device. I'll personally advise that you get another wallet and move your tokens out of the present wallet.
True, there is no other way if a wallet has been infiltrated by hackers, other than moving all assets into another wallet, but usually if a wallet has been infiltrated by hackers, valuable coins will be taken first than coins that have no price.